US10821635B2 - Method for producing an interior trim part of a vehicle and molding tool - Google Patents

Method for producing an interior trim part of a vehicle and molding tool Download PDF

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Publication number
US10821635B2
US10821635B2 US15/605,789 US201715605789A US10821635B2 US 10821635 B2 US10821635 B2 US 10821635B2 US 201715605789 A US201715605789 A US 201715605789A US 10821635 B2 US10821635 B2 US 10821635B2
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Prior art keywords
molding tool
tool element
slide
decorative skin
hollow area
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US15/605,789
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US20170341279A1 (en
Inventor
Bernhard Baumann
Hugo Bonvalet
Othmane Faik
Lionel Hafer
Alain Julien
Jean Ruiz
Michael Walter
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Faurecia Innenraum Systeme GmbH
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Faurecia Innenraum Systeme GmbH
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Assigned to FAURECIA INNENRAUM SYSTEME GMBH reassignment FAURECIA INNENRAUM SYSTEME GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BAUMANN, BERNHARD, Bonvalet, Hugo, FAIK, OTHMANE, Hafer, Lionel, JULIEN, ALAIN, RUIZ, JEAN, WALTER, MICHAEL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1228—Joining preformed parts by the expanding material
    • B29C44/1233—Joining preformed parts by the expanding material the preformed parts being supported during expanding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/12—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels
    • B29C33/14—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels against the mould wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/10—Applying counter-pressure during expanding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1257—Joining a preformed part and a lining, e.g. around the edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • B29C44/143—Means for positioning the lining in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/35—Component parts; Details or accessories
    • B29C44/351—Means for preventing foam to leak out from the foaming device during foaming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds
    • B29C44/586—Moulds with a cavity increasing in size during foaming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14467—Joining articles or parts of a single article
    • B29C45/14508—Joining juxtaposed sheet-like articles, e.g. for making trim panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/04—Bending or folding of plates or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
    • B29C45/14196—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being positioned around an edge of the injected part
    • B29C2045/14204—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being positioned around an edge of the injected part the edges formed by an intermediate mould part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1228—Joining preformed parts by the expanding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0063—Density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings

Definitions

  • the application relates to a method for producing an interior trim part of a vehicle.
  • the application relates to a molding tool for producing an interior trim part of a vehicle.
  • FR 2 979 569 A1 describes a method in which first a molding tool is provided that has a lower and an upper molding tool part. Then the previously produced cover layer is arranged on the lower molding tool part and the backing, also produced previously, is attached to the upper molding tool part.
  • the molding tool is typically embodied such that the backing and the cover layer in the resulting arrangement are not in direct contact with one another so that a hollow area is formed between the backing and the cover layer.
  • the upper molding tool part and the backing may each have an opening through which a liquid foamable mixture may be added to the hollow area.
  • a period of time may be allowed to pass so that the mixture has foamed completely and hardened so that it forms the foam layer that fills the empty space and connects the backing to the cover layer.
  • the volume of the foamable mixture increases by five to ten-fold during the foaming process.
  • the lower molding tool part may be moved downward relative to the upper molding tool part so that a height of the hollow area is enlarged during the foaming process.
  • the finished interior trim part of a vehicle may be removed from the molding tool.
  • This method is suitable for producing a vehicle interior trim part having a thin foam layer that has a low foam density. In this way it is possible to achieve advantageous savings in the weight of the vehicle interior trim piece.
  • inhomogeneities may occur in the foam layer if there is air present in the hollow area or if gaseous reaction products that may occur during the foaming process cannot reliably escape from the hollow area.
  • a molding tool comprising a first molding tool element, a second molding tool element, and a slide is prepared.
  • a cavity is formed between the first molding tool element and the second molding tool element.
  • the slide is displaceably connected to the first molding tool element.
  • a decorative skin or decorative layer having a visible side of the decorative skin is arranged on the first molding tool element and a backing is arranged on or attached to the second molding tool element.
  • a hollow area is formed between the backing and a reverse side of the decorative skin.
  • a foamable mixture is added to the hollow area.
  • the mixture foams such that a foam layer that fills the hollow area is formed.
  • a distance between the first molding tool element and the second molding tool element is increased so that the hollow area is enlarged.
  • the slide is pressed against a side facing away from the reverse side of the decorative skin or against the visible side of the decorative skin such that the hollow area is sealed in that the reverse side of the decorative skin is pressed against a lateral surface of the backing and/or against a lateral surface of the second molding tool element or in that the reverse side of the decorative skin, or at least an area thereof, touches the lateral surface of the backing and/or the lateral surface of the second molding tool element.
  • the foaming process is accompanied by an increase in the volume of the mixture, for instance a five to ten-fold increase in volume of the mixture. Moreover, the viscosity of the mixture increases sharply during the foaming process. Since the distance between the molding tool elements is smaller during the filling process, a smaller volume of air must escape from the hollow area while the foamable mixture is being added. During this, it may be provided that the distance when adding the foamable mixture should be selected such that the foamable mixture fills at least 50 percent of the hollow area, or for instance, nearly completely fills the hollow area. A relatively low density of the foam layer may be attained compared to production methods that provide a fixed distance between the first molding tool element and the second molding tool element. In embodiments, the foam layer has a density of at most 200 g/L, preferably at most 150 g/L or at most 100 g/L.
  • a comparatively light-weight vehicle interior trim part that comprises the flat backing, the foam layer, and the decorative skin, wherein the decorative skin is spaced apart from the backing.
  • the foam layer Arranged between the decorative skin and the backing is the foam layer, which is joined to the backing and the reverse side of the decorative skin. Due to the foam layer that is arranged between backing and the decorative skin, esthetically attractive, soft haptics are produced when a vehicle occupant touches the decorative skin on its visible side.
  • the hollow area after the foaming process of the mixture the hollow area has a height of at least 2 mm, preferably at least 4 mm, and/or at least 15 mm, preferably at most 8 mm.
  • the hollow area may also have a height of at most 40 mm, preferably at most 20 mm. The height of the hollow area corresponds to a thickness of the foam layer that is to be produced.
  • the second molding tool element typically has an opening that is connected to the cavity for adding or introducing the foamable mixture to the hollow area.
  • the mixture may be added by means of a known filling device, for instance a metering filling device.
  • the foamable or foam-forming mixture is typically added to the hollow area in the liquid state, preferably the low-viscosity liquid state.
  • the foamable mixture reliably distributes in the hollow area such that an undesired densification of the mixture during the foaming process in an area and formation of undesired air pockets in the foam layer may be prevented.
  • the foamable mixture is arranged on the reverse side of the decorative skin facing away from the visible side of the decorative skin.
  • the first forming tool element is arranged beneath the second forming tool element.
  • the liquid foamable mixture may distribute on the reverse side of the decorative skin due to gravity.
  • the liquid foamable mixture may distribute on the reverse side of the decorative skin due to a filling pressure.
  • the foamable mixture is typically a reactive mixture, for instance a foamable polymer.
  • the mixture may have a plurality of chemical compounds that react with one another chemically such that gases are formed that cause foaming.
  • the mixture may be a mixture for forming polyurethane. It may include, for instance, at least one isocyanate, at least one polyol, and water. A reaction between the isocyanate and the polyol may lead to the formation of the polyurethane, while carbon dioxide is released by a reaction between the isocyanate and the water.
  • the visible side of the decorative skin does not have to be visible at all times and in all areas.
  • the visible side shall merely be construed to mean that this side of the decorative skin is oriented towards the interior of the vehicle when the vehicle interior trim part is used properly.
  • the disclosure also relates to a molding tool for producing the vehicle interior trim part, the molding tool having the decorative trim, the backing, and the foam layer arranged between the decorative skin and the backing.
  • the molding tool comprises the first molding tool element and the second molding tool element, wherein the cavity is formed between the first molding tool element and the second molding tool element.
  • the backing may be arranged on or attached to the second molding tool element and the visible side of the decorative skin may be arranged on the first molding tool element such that the hollow area is formed between the backing and the reverse side of the decorative skin.
  • the foamable mixture may be added to the hollow area and the second molding tool element may be moved relative to the first molding tool element such that the hollow area may be enlarged prior to and/or during the foaming process of the foamable mixture.
  • the molding tool furthermore comprises the at least one slide, which is displaceably connected to the first molding tool element.
  • the slide is set up to press against the side facing away from the reverse side of the decorative skin, or the visible side of the decorative skin, during a movement of the second molding tool element relative to the first molding tool element such that the hollow area is sealed in that the reverse side of the decorative skin is pressed against the lateral surface of the backing and/or against the lateral surface of the molding tool element.
  • the hollow area may be reliably sealed in that the slide presses against the decorative skin.
  • the hollow area may also be reliably sealed while the distance is increased. In this way it is possible, for instance, to prevent foam from exiting from the hollow area as a result of the increase in volume during the foaming process.
  • the method and the molding tool described in this disclosure therefore permit savings in materials during the production of interior trim parts of a vehicle, since a smaller quantity of the foamable mixture may be used. Moreover, there is no need for an additional processing step in the form of separating foam that may have escaped from the hollow area.
  • Another advantage of the method and the molding tool described in this disclosure is that it permits the sealing of the hollow area while the distance between the first molding tool element and the second molding tool element is increased with decorative skin lying smooth on the second molding tool element.
  • This advantage is not achieved with known methods, such as, for instance, in the publication FR 2 979 569 A1.
  • the cover layer necessarily creates waves in the edge areas of the hollow area when the distance between the lower and the upper molding tool part is slight. It is not until the height of the hollow area increases that the cover layer lies smoothly against the lower molding tool part. Making waves in the cover layer may have a negative effect on the quality of the foam layer to be formed.
  • the decorative skin is typically arranged with an edge area of the decorative skin between the slide and the lateral surface of the backing and/or the lateral surface of the second molding tool element after the decorative skin has been arranged on the first tool element.
  • one direction in one plane of the edge area of the decorative skin runs essentially parallel to a movement direction of the second molding tool element relative to the first molding tool element when the slide presses on the decorative skin.
  • the surfaces of the backing and/or of the second molding tool, against which the slide presses are essentially oriented and embodied such that a normal vector that is perpendicular on the surfaces is oriented perpendicular to the movement direction in a plurality of or all areas of the surfaces.
  • the surfaces against which the slide presses are embodied essentially not curved and/or without stages in the movement direction.
  • the slide may be displaced electrically, hydraulically, or pneumatically, for instance.
  • the slide is translationally displaceable, at least in part, and especially is exclusively translationally or essentially translationally displaceable. In this manner it may be achieved that when pressing the slide against the decorative skin a pressure is distributed as uniformly as possible across a surface of the decorative skin.
  • the slide presses in a direction that is oriented essentially perpendicular to the movement direction of the second molding tool element relative to the first molding tool element while the distance is being increased.
  • the reverse side of the decorative skin slides along on the lateral surface of the backing and/or of the lateral surface of the second molding tool element when the slide is pressed.
  • a plurality of slides may be provided. These are then typically arranged in the positions running laterally around the hollow area. The slides then typically press inward to seal the hollow area.
  • additional sealing elements which may be elastically deformable, may be provided running around the hollow area.
  • a surface of the slide in contact with the decorative skin when the slide is pressed against the side facing away from the reverse side of the decorative skin or the visible side of the decorative skin may have elevations for reinforcing static friction between the decorative skin and the slide.
  • the elevations may be in the form of teeth or wrinkling.
  • static friction is increased between the side of the decorative skin facing away from the reverse side or between the visible side of the decorative skin and the slide such that it is greater than friction between the reverse side of the decorative skin and the lateral surface of the second molding tool element and/or the backing. What this achieves is that, while the distance between the first and the second molding tool element is being increased, the decorative skin does not displace due to adhesion to the lateral surface of the second molding element and/or of the backing.
  • the surface of the slide in contact with the decorative skin when the slide is pressed and the lateral surfaces of the second molding tool element or of the backing do not engage in one another.
  • these surfaces do not have any overlap in the direction of movement of the second molding tool element that limits or prevents the freedom of movement of the second molding tool. What this achieves is that the second molding tool is reliably displaceable relative to the first molding tool element, even while the slide is being pressed against the decorative skin.
  • these surfaces do not have any mutually corresponding elevations or depressions that would limit the freedom of movement of the molding tool elements relative to one another.
  • the distance between the first molding tool element and the second molding tool element prior to the foaming or during the foaming process increases until a resulting height of the hollow area corresponds to a thickness of the foam layer to be produced.
  • the reverse side of the decorative skin is pressed by the slide against the lateral surface of the backing, and not against the lateral surface of the second molding tool element, as soon as the resulting height is reached.
  • This is typically reached in that a size and positioning of the decorative skin on the first molding tool element are appropriately selected.
  • the sealing action is effected by the edge area of the decorative skin such that, after the foam layer has formed, no overhanging areas of the decorative skin have to be separated, for instance by punching.
  • the hollow area may also be deaerated in a controlled manner, in addition to the sealing described in the foregoing.
  • the hollow area may be deaerated while the foamable mixture is being added to the hollow area.
  • the hollow area is deaerated in that the slide is displaced to a withdrawn position or is left in a withdrawn position.
  • air or gaseous reaction products may escape through a gap possibly formed between the reverse side of the decorative skin and the second molding tool part or through a gas-permeable channel.
  • the application furthermore relates to an interior trim part of a vehicle that was produced according to the method described here.
  • the decorative skin is typically a slush skin. These may be produced relatively inexpensively using known methods and may be visually attractive. In other embodiments, however, it is also possible for the decorative skin to be embodied using another layer known from the prior art, for instance using a different plastic layer (PU spray skin, deep-draw film, IMG film) or a leather layer.
  • the backing may be embodied, for instance, as an injection molding part made of plastic.
  • the features cited in the foregoing regarding the method for producing the vehicle interior trim part may be applied to the molding tool for producing the vehicle interior trim part. Moreover, the features cited in the foregoing regarding the molding tool for producing the vehicle interior trim part may be applied to the method for producing the vehicle interior molding part.
  • FIG. 1 depicts a molding tool, according to embodiments of the disclosure
  • FIG. 2 is a schematic view during a method step in the production of an interior trim part of a vehicle, according to embodiments of the disclosure
  • FIG. 3 is a schematic view during another method step in the production of the interior trim part of a vehicle, according to embodiments of the disclosure.
  • FIG. 4 is an enlarged depiction of an area in FIG. 3 ;
  • FIG. 5 is a schematic view during another method step in the production of the interior trim part of a vehicle, according to embodiments of the disclosure.
  • FIG. 6 is an enlarged depiction of an area in FIG. 5 ;
  • FIG. 7 is a schematic view during another method step in the production of the interior trim part of a vehicle, according to embodiments of the disclosure.
  • FIG. 1 depicts a molding tool 1 .
  • the molding tool 1 comprises a first molding tool element 2 and a second molding tool element 3 .
  • a cavity 4 is formed between the first molding tool element 2 and the second molding tool element 3 .
  • the cavity 4 is delimited on a top side by the second molding tool element 3 and on a bottom side by the first molding tool element 2 .
  • the molding tool 1 also comprises two slides 5 , 5 ′, which are each displaceably connected to the first molding tool element 2 .
  • the slides 5 , 5 ′ laterally delimit the cavity 4 and in the depicted embodiment are linearly displaceable to the left and right. Displacement of the slides 5 , 5 ′ may be driven, for instance, by an electric motor (not shown).
  • the second molding tool element 3 may be displaced upward and downward relative to the first molding tool element 2 such that a height of the cavity 4 may be increased by displacing the second molding tool element 3 upward.
  • the second molding tool element 3 has an opening 6 that is provided for adding a foamable mixture to the cavity 4 .
  • a filling device (not shown) may be connected to the second molding tool element 3 in the area of the opening 6 for this purpose.
  • FIG. 2 depicts a method step during the production of an interior trim part of a vehicle.
  • a decorative skin 7 has been arranged on the first molding tool element 2 such that a visible side 8 of the decorative skin 7 faces the first molding tool element 2 .
  • the decorative skin 7 is a slush skin, for instance.
  • a backing 9 has been attached to the second molding tool element 3 .
  • the backing 9 is extended flat horizontally and is produced as an injection molding part made of plastic. In a center area the backing 9 has an opening 10 .
  • the backing 9 is embodied and arranged such that the opening 10 of the backing 9 overlaps the opening 6 of the second molding tool element 3 .
  • the backing 9 and the decorative skin 7 do not completely fill the cavity 4 . Instead, a bottom side 11 of the backing 9 and a reverse side 12 of the decorative skin 7 are spaced apart from one another such that a hollow area 13 is formed between the backing 9 and the decorative skin 7 .
  • FIG. 3 depicts another method step in the production of the interior trim part of a vehicle.
  • a liquid foamable mixture 14 is added from above to the hollow area 13 between the backing 9 and the decorative skin 7 through the opening 6 of the second molding tool element 3 and through the opening 10 of the backing 9 . Because of gravity and/or injection pressure, the liquid foamable mixture 14 distributes on the reverse side 12 of the decorative skin 7 and fills, for example, about 65 percent of the volume of the hollow area 13 .
  • the foamable mixture 14 is, for example, a reactive foamable polymer that is set up to react to polyurethane.
  • the slides 5 , 5 ′ are in an opened or withdrawn position, i.e., the left slide 5 has been displaced to the left and the right slide 5 ′ has been displaced to the right.
  • FIG. 4 depicts and enlarged view of an area of the arrangement depicted in FIG. 3 and identified with the reference number 15 .
  • the decorative skin 7 has been arranged on the first molding tool element 2 such that the decorative skin 7 is oriented nearly vertical in an edge area 16 .
  • the edge area 16 of the decorative skin 7 is laterally enclosed by the slide 5 ′ and a lateral surface 17 of the backing 9 and a lateral surface 18 of the second molding tool element 3 .
  • An area of the visible side 8 or the side of the decorative skin 7 facing away from the reverse side 12 is positioned against a surface 19 of the slide 5 ′.
  • the slide has elevations, of which two are identified with reference numbers 20 and 20 ′ as examples.
  • a gap 21 Formed between the reverse side 12 of the decorative skin 7 and the lateral surface 17 of the backing 9 or of the lateral side 18 of the second molding element 13 is a gap 21 . Air escapes from the hollow area 13 through the gap 21 when the foamable mixture 14 is added to the hollow area 13 .
  • the slides 5 , 5 ′ are displaced inwardly, as is indicated in FIG. 5 by the arrows labeled with reference numbers 22 and 22 ′.
  • FIG. 6 depicts an enlarged view of the area identified in FIG. 5 with reference number 23 .
  • the edge area 16 of the decorative skin 7 is pressed to the left by the displacement of the slide 5 ′. This presses the reverse side 12 of the decorative skin 7 in the edge area 16 against the lateral surface 17 of the backing 9 and against the lateral surface 18 of the second molding tool element 13 . Thus the gap 21 is closed and the hollow area 13 is sealed.
  • the previously liquid foamable mixture 14 foams.
  • the second molding tool element 3 together with the backing 9 , is moved upward, so that the cavity 4 and the hollow area 13 enlarge. It may also be provided that the second molding tool element 3 , together with the backing 9 , is moved upward even prior to the foaming process.
  • the slides 5 , 5 ′ remain in the position illustrated in FIG. 6 , so that the hollow area 13 remains sealed.
  • FIG. 7 depicts the arrangement at a point in time after the second molding tool 3 has been moved upward in the direction of the arrow labeled with the reference number 25 .
  • the cavity 4 is enlarged in this manner until a height of the hollow area 13 corresponds to a desired thickness of a foam layer 24 to be produced.
  • the reverse side 12 of the decorative skin 7 is merely pressed against the lateral surface 17 of the backing 9 , but not against the lateral surface 18 of the second molding tool element 3 .
  • the foam layer 24 is formed from the previously liquid foamable mixture 14 due to the foaming process.
  • the volume of the mixture 14 increases so that the foam layer 24 in the example depicted completely fills the hollow area 13 .
  • the foam layer 24 is connected to the bottom side 11 of the backing 9 and to the reverse side 12 of the decorative skin 7 .
  • the increase in the volume of the mixture is associated with a decrease in the density of the mixture so that the foam layer 24 has a comparatively low density of, for instance, less than 150 g/L.
  • the finished interior trim part of a vehicle which comprises the decorative skin 7 , the foam layer 24 , and the backing 9 , may be removed from the molding tool 1 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
US15/605,789 2016-05-26 2017-05-25 Method for producing an interior trim part of a vehicle and molding tool Active 2038-11-20 US10821635B2 (en)

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DE102019120104A1 (de) * 2019-07-25 2021-01-28 Webasto SE System und Verfahren zum Bearbeiten plattenförmiger Werkstücke für ein Kraftfahrzeug

Citations (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2112652A1 (de) 1970-03-16 1971-10-14 C I Touring Caravans Ltd Verfahren und Vorrichtung zum Herstellen eines Schaumstoff-Formkoerpers
US4114213A (en) * 1974-08-01 1978-09-19 International B. F. Goodrich-Europe B.V. Method for manufacturing essentially wrinkle-free foamed articles with an upholstery material adhering thereto and resultant article
US4387066A (en) * 1979-07-19 1983-06-07 Rohm Gmbh Method of making a foamed resin sheet
US4793784A (en) 1987-10-14 1988-12-27 Davidson Textron Inc. Apparatus for making foamed articles
JPH02155709A (ja) * 1988-12-09 1990-06-14 Shimizu Kogyo Kk 端末が表皮材によって覆われた積層体の射出成形方法およびその射出成形型
US4968474A (en) * 1988-09-19 1990-11-06 Toyoda Gosei Co., Ltd. Method of producing resin molded article
US4992224A (en) * 1988-03-28 1991-02-12 Davidson Textron Inc. Method of making composite foamed articles using fluid pressure to position a skin layer
US5006288A (en) * 1989-10-12 1991-04-09 Davidson Textron Inc. Molding method for stabilizing the location of a skin insert
US5372491A (en) * 1987-11-19 1994-12-13 Pebra Gmbh Paul Braun Device for manufacturing plastic moldings and use of the device
US5500169A (en) * 1994-05-27 1996-03-19 Kabushiki Kaisha Inoac Corporation Method and die apparatus for producing plastic molding having foam with skin
US5500168A (en) * 1994-06-07 1996-03-19 Kabushiki Kaisha Inoac Corporation Partial pad foam molding method
US5618477A (en) * 1994-06-10 1997-04-08 Kabushiki Kaisha Inoac Corporation Method and die apparatus for producing plastic molding having foam with skin
US5709828A (en) 1995-10-26 1998-01-20 Davidson Textron Inc. Method of fabricating a foamed interior trim product
US5976289A (en) * 1996-12-13 1999-11-02 Toyo Tire & Rubber Co., Ltd. Method of fabricating instrument panel
US6103348A (en) * 1996-06-05 2000-08-15 Otto Deuschle Model- Und Formenbau Gmbh & Co. Kg Plastics shaped part with a plurality of fields, and method and device for the manufacture thereof
WO2000050211A1 (de) * 1999-02-22 2000-08-31 Otto Deuschle Modell- Und Formenbau Gmbh & Co. Kg Gmt-kunststoff-pressteil sowie verfahren und vorrichtung zur herstellung eines solchen
US6126769A (en) * 1994-03-12 2000-10-03 Otto Deuschle Modell-Und Formenbau Gmbh & Co. Film laminated plastic moulding as well as process and device for its manufacture
EP1097794A1 (de) * 1999-11-06 2001-05-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Formwerkzeug zur Herstellung von mehrschichtigen Formteilen und seine Verwendung
US20040166302A1 (en) * 2003-02-26 2004-08-26 Lee Shin Sik Joint structure for a partial foaming part of an instrument panel
US6854783B2 (en) * 2000-02-28 2005-02-15 Mitsubishi Belting Ltd. Multi-layer instrument panel having an accessory mounted thereon and a method of manufacturing the same
US7147809B2 (en) * 2003-05-06 2006-12-12 Lear Corporation Foam in place composite one-piece hard/soft panel
EP1857245A2 (de) * 2006-05-09 2007-11-21 Krauss Maffei GmbH Abdichtbares Formwerkzeug
US7332207B2 (en) * 2004-12-15 2008-02-19 Visteon Global Technologies, Inc. Component for a vehicle interior and a method of assembly
FR2979569A1 (fr) * 2011-09-07 2013-03-08 Faurecia Innenraum Sys Gmbh Procede de realisation d'une couche de mousse, couche de mousse et piece d'habillage interieur de vehicule comportant une couche de mousse
US8506003B2 (en) * 2004-01-03 2013-08-13 Johnson Controls Technology Company Vehicle component and method for making a vehicle component
US9493124B2 (en) * 2010-01-19 2016-11-15 Faurecia Innenraum Systeme Gmbh Method for manufacturing an interior trim component
DE102016205031A1 (de) * 2016-03-24 2017-09-28 Faurecia Innenraum Systeme Gmbh Verfahren zur Herstellung eines Fahrzeuginnenverkleidungsteils und Fahrzeuginnenverkleidungsteil
US10016916B2 (en) * 2008-04-15 2018-07-10 Gurit (Uk) Ltd. Structural foam and manufacture thereof

Patent Citations (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2112652A1 (de) 1970-03-16 1971-10-14 C I Touring Caravans Ltd Verfahren und Vorrichtung zum Herstellen eines Schaumstoff-Formkoerpers
US4114213A (en) * 1974-08-01 1978-09-19 International B. F. Goodrich-Europe B.V. Method for manufacturing essentially wrinkle-free foamed articles with an upholstery material adhering thereto and resultant article
US4387066A (en) * 1979-07-19 1983-06-07 Rohm Gmbh Method of making a foamed resin sheet
US4793784A (en) 1987-10-14 1988-12-27 Davidson Textron Inc. Apparatus for making foamed articles
US5372491A (en) * 1987-11-19 1994-12-13 Pebra Gmbh Paul Braun Device for manufacturing plastic moldings and use of the device
US4992224A (en) * 1988-03-28 1991-02-12 Davidson Textron Inc. Method of making composite foamed articles using fluid pressure to position a skin layer
US4968474A (en) * 1988-09-19 1990-11-06 Toyoda Gosei Co., Ltd. Method of producing resin molded article
JPH02155709A (ja) * 1988-12-09 1990-06-14 Shimizu Kogyo Kk 端末が表皮材によって覆われた積層体の射出成形方法およびその射出成形型
US5006288A (en) * 1989-10-12 1991-04-09 Davidson Textron Inc. Molding method for stabilizing the location of a skin insert
US6126769A (en) * 1994-03-12 2000-10-03 Otto Deuschle Modell-Und Formenbau Gmbh & Co. Film laminated plastic moulding as well as process and device for its manufacture
US5500169A (en) * 1994-05-27 1996-03-19 Kabushiki Kaisha Inoac Corporation Method and die apparatus for producing plastic molding having foam with skin
US5500168A (en) * 1994-06-07 1996-03-19 Kabushiki Kaisha Inoac Corporation Partial pad foam molding method
US5618477A (en) * 1994-06-10 1997-04-08 Kabushiki Kaisha Inoac Corporation Method and die apparatus for producing plastic molding having foam with skin
US5709828A (en) 1995-10-26 1998-01-20 Davidson Textron Inc. Method of fabricating a foamed interior trim product
US6103348A (en) * 1996-06-05 2000-08-15 Otto Deuschle Model- Und Formenbau Gmbh & Co. Kg Plastics shaped part with a plurality of fields, and method and device for the manufacture thereof
US5976289A (en) * 1996-12-13 1999-11-02 Toyo Tire & Rubber Co., Ltd. Method of fabricating instrument panel
WO2000050211A1 (de) * 1999-02-22 2000-08-31 Otto Deuschle Modell- Und Formenbau Gmbh & Co. Kg Gmt-kunststoff-pressteil sowie verfahren und vorrichtung zur herstellung eines solchen
EP1097794A1 (de) * 1999-11-06 2001-05-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Formwerkzeug zur Herstellung von mehrschichtigen Formteilen und seine Verwendung
US6854783B2 (en) * 2000-02-28 2005-02-15 Mitsubishi Belting Ltd. Multi-layer instrument panel having an accessory mounted thereon and a method of manufacturing the same
US20040166302A1 (en) * 2003-02-26 2004-08-26 Lee Shin Sik Joint structure for a partial foaming part of an instrument panel
US7147809B2 (en) * 2003-05-06 2006-12-12 Lear Corporation Foam in place composite one-piece hard/soft panel
US8506003B2 (en) * 2004-01-03 2013-08-13 Johnson Controls Technology Company Vehicle component and method for making a vehicle component
US7332207B2 (en) * 2004-12-15 2008-02-19 Visteon Global Technologies, Inc. Component for a vehicle interior and a method of assembly
EP1857245A2 (de) * 2006-05-09 2007-11-21 Krauss Maffei GmbH Abdichtbares Formwerkzeug
US10016916B2 (en) * 2008-04-15 2018-07-10 Gurit (Uk) Ltd. Structural foam and manufacture thereof
US9493124B2 (en) * 2010-01-19 2016-11-15 Faurecia Innenraum Systeme Gmbh Method for manufacturing an interior trim component
FR2979569A1 (fr) * 2011-09-07 2013-03-08 Faurecia Innenraum Sys Gmbh Procede de realisation d'une couche de mousse, couche de mousse et piece d'habillage interieur de vehicule comportant une couche de mousse
DE102016205031A1 (de) * 2016-03-24 2017-09-28 Faurecia Innenraum Systeme Gmbh Verfahren zur Herstellung eines Fahrzeuginnenverkleidungsteils und Fahrzeuginnenverkleidungsteil

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